James l



A i J. L. SCOTT. Apparatus for 'I'ransmitting Power.

No. 223,956; Patented 1an. 21, 1880.

www' i N. PETERS. PHOTO-UTHDGRAPHER. wAsHxNGToN, D C.

UNITED STATES JAMES L. soorr, E NEW YORK, N. Y.

PATENT OFFICE.

APPARATUS FOR TRANSMITTING POWER.

SPECIFICATION forming part of Letters Patent No. 223,956, dated January27, 1880.

l Application filed June 27. 1879.

To all whom it may concern Be it known that I, JAMES L. SCOTT, of thecity,.county, and State of New York, have invented certain new anduseful Improvements in Apparatus for Transmitting Power, otl which thefollowing. is a specification.

The object of my invention is a device for transmitting powerto reducefriction, and atford an increased leverage and corresponding increase ofpower.

In the drawing, the figure illustrates one construction of my improveddevice, applicable to the operation of sewing-machines from a .treadle'A is a lever or arm, pivoted at one end, and carryin g a rack, a, at theupper end, which rack is preferably curved, as shown, and B is a bar orrod carrying a toothed wheel or segment, b, which engages with the rack.This bar must be suspended or `connected to the frame-work in such amanner that the segment b will restI upon the rack and travel therewith.In the present instance the bar is jointed to lever, G, pivoted at y tothe frame, and also to the end of arm D, pivoted to a lever, d, on thetreadle-shaft, or to the treadle itself.' 4

To prevent the segment from jumping from the rack, a plate or guide, e,on the rack-bar, is slotted to receive a central projection, i,

ofthe segment. Pressure upon the ends of the arm d tends to turn the barB on its pivot n, and to carry the segment and rack back and forth, andto raise and lower the lever C. As the segment travels in the directionof its arrow the action is that of a toggle-joint, or rather ofa rapidsuccession of toggle-joints, as dit'- ferent teeth of the rack andsegment engage with each other, as indicated by the dotted lines. Itdiffers from the usual toggle-joint, however, in the fact that theconnection-point ot` the two arms travels from side to side.

It will be apparent that pins and corresponding slots may be substitutedfor the toothed wheel and ratchet.

l claiin- The combination of the lever A, its rack a, the suspended barB. its wheel or segment b, the connecting-rod D, optrated from thedriving` device, and lever C, connected to the bar B and to themechanism to be'operated, substantially as set forth.

In testimony whereof I have signed my name to this specilication in thepresence ot' two subscribing witnesses.

JAMEs L. soor'r.

Witnesses CHARLES E. FOSTER, WILLIAM PAX'IoN.

